The Factory Fatty was once only available to factory race teams. This pipe is based on the world famous Fatty but constructed from a thinner gauge metal with hand pounded seams - materials and techniques that make a true 'Works" pipe. The Factory Fatty is renowned for its thick and linear powerband - always with power on demand.
Features:
Hand pounded seams for superior flow
Lighter gauge metal for the Factory sound
Broader, smoother powerband
More tractable power, better throttle control
Unplated 20 gauge header and 19 gauge body for a true factory pipe
Includes O-rings
 
Bike Fitment:
Yamaha YZ250 2002
Yamaha YZ250 2003
Yamaha YZ250 2004
Yamaha YZ250 2005
Yamaha YZ250 2006
Yamaha YZ250 2007
Yamaha YZ250 2008
Yamaha YZ250 2009
Yamaha YZ250 2010
Yamaha YZ250 2011
Yamaha YZ250 2012
Yamaha YZ250 2013
Yamaha YZ250 2014
Yamaha YZ250 2015
Yamaha YZ250 2016
Yamaha YZ250 2017